chemo defeated bart part with 52% of the vote. and stay with wjz. for more information, go to wjz.com. >>> we continue to follow breaking news in prince george's county where an suv collided with an ambulance shortly after mid-night. three people inside the suv were killed. two paramedics suffered minor injuries. police believe the suv cross the double yellow lynn and side swiped the ambulance. >>> for the second time baltimore police officers and firefighters are using billboards to, press their opinion of city hall. >> reporter: you can't miss it, this two-story billboard it. blasts city leaders, accusing them of not honoring the pension deal made with police officers and firefighters. >> what they have done is violate the city code. >> reporter: this summer the mayor and city raised the retirement age, and cut costs. >> you have a bunch of thieves at city hall. >> reporter: mayor stephanie rawlings-blake insisted the changes are fair, that it ensures retirees have a secure plan and one the city can lay ford. this is the second bill board put up b